US 11,914,867 B2
Coordinated snapshots among storage systems implementing a promotion/demotion model
Ronald Karr, Palo Alto, CA (US)
Assigned to PURE STORAGE, INC., Santa Clara, CA (US)
Filed by PURE STORAGE, INC., Mountain View, CA (US)
Filed on Apr. 27, 2022, as Appl. No. 17/730,941.
Application 17/730,941 is a continuation in part of application No. 17/514,784, filed on Oct. 29, 2021, granted, now 11,714,723.
Claims priority of provisional application 63/298,161, filed on Jan. 10, 2022.
Prior Publication US 2023/0138895 A1, May 4, 2023
Int. Cl. G06F 12/00 (2006.01); G06F 3/06 (2006.01)
CPC G06F 3/0619 (2013.01) [G06F 3/064 (2013.01); G06F 3/065 (2013.01); G06F 3/067 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method comprising:
monitoring a set of two or more target storage systems, wherein the two or more target storage systems are replication targets for respective portions of a source dataset;
associating a first coordinated tracking dataset with two or more local tracking datasets maintained on the two or more target storage systems, wherein each local tracking dataset is a tracking copy for one portion of the source dataset; and
advancing, in dependence upon a first coordinated target checkpoint, the first coordinated tracking dataset, wherein the first coordinated target checkpoint is associated with a set of local replicated checkpoints replicated from a set of source storage systems and the set of local replicated checkpoints is associated with a coordinated source checkpoint for the dataset.